The sheriffs deputy mentioned in the article has no more right to be where he was than the other drone operator. In other words, even knowing who was operating the other drone, doesn't mean he could be ordered out of the area. You could ask, but not order.
And who's going to monitor drone activity and get the info to law enforcement or whoever.
Regarding the air ambulance helicopter, ATC doesn't ever know exactly where the are. They don't use transponders like commercial planes. I flew law enforcement helicopters in the Phoenix area (class B airspace) and we did not have transponders either. ATC didn't know exactly where we were either
If ATC detected a drone flying around they wouldn't know who to warn. I guess they could just broadcast it and hope if anyone was near it they could avoid it. (Aren't controllers too busy already?)
Maybe they need to put these in cars too- a car can be used as a weapon with a much bigger bang. Cars do have license plates but they don't broadcast the cars position.
Another solution in search of a problem...
Not to mention Amazon wants the sky to themselves .